A Comet from the Stars?

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Profile AndrewMarcio
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Message 1902345 - Posted: 22 Nov 2017, 15:36:12 UTC
Last modified: 22 Nov 2017, 15:38:19 UTC

Solar System’s First Interstellar Visitor Dazzles Scientists

Hello. Recently astronomers have spotted an unprecedented interplanetary traveler: an asteroid-like object that came from far beyond our own solar system.

Discussion on Reddit about Theory about Oumuamua

Fun fact: The name Oumuamua is Hawaiian in origin from the word meaning "scout" (from ʻou, meaning "reach out for", and mua, with the reduplicated second mua for emphasis​, meaning "first, in advance of"), and reflects the nature of the object as a "scout" or "messenger" from the past.
(source: wikipedia)
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Message 1903958 - Posted: 30 Nov 2017, 22:01:52 UTC

It's interesting how the asteroid has this difference in light reflexion from the surface. I'd like to see more of that strange object... ;)


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Message 1904581 - Posted: 3 Dec 2017, 7:50:36 UTC - in response to Message 1904577.  

The main interest lies in that it is the first interstellar object detected from outside our Solar system. But I think we can pretty much rule out probes and spaceships. Be interesting to find out how long its orbit is and therefore when it has visited before and when it might visit again.

It is on a hyperbolic trajectory and won't return, ie. it isn't in orbit around our sun.
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Message 1904634 - Posted: 3 Dec 2017, 17:13:24 UTC - in response to Message 1904577.  
Last modified: 3 Dec 2017, 17:23:02 UTC

The main interest lies in that it is the first interstellar object detected from outside our Solar system. But I think we can pretty much rule out probes and spaceships. Be interesting to find out how long its orbit is and therefore when it has visited before and when it might visit again.

The scientists at the SETI Institute don't seem to have ruled out the possible connection between Oumumamua and extraterrestrial intelligence. Again, last night, they were monitoring this mysterious object for radio signals. They've been doing so for over a month.
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Message 1904680 - Posted: 3 Dec 2017, 22:40:33 UTC - in response to Message 1904634.  
Last modified: 3 Dec 2017, 22:47:15 UTC

The main interest lies in that it is the first interstellar object detected from outside our Solar system. But I think we can pretty much rule out probes and spaceships. Be interesting to find out how long its orbit is and therefore when it has visited before and when it might visit again.

The scientists at the SETI Institute don't seem to have ruled out the possible connection between Oumumamua and extraterrestrial intelligence. Again, last night, they were monitoring this mysterious object for radio signals. They've been doing so for over a month.

Yes. SETI are listening to the interstellar interloper.
Very strange and also pointless.
https://www.centauri-dreams.org/?p=38844
But Oumuamua is not a probe or a spaceship.
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Message 1904811 - Posted: 4 Dec 2017, 17:30:00 UTC - in response to Message 1904680.  
Last modified: 4 Dec 2017, 17:44:10 UTC


Yes. SETI are listening to the interstellar interloper.
Very strange and also pointless.
https://www.centauri-dreams.org/?p=38844
But Oumuamua is not a probe or a spaceship.


The SETI Institute used the Allen Telescope Array again, last night to monitor Oumuamua. They seem to think it at least as likely a source of intelligent signals as the exoplanets they normally scrutinize.

If you have any way of definitely knowing the true nature Oumuamua, or have evidence that what the SETI Institute is doing is pointless, could you please present it here? Thank you.
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Message 1906698 - Posted: 13 Dec 2017, 13:44:17 UTC

"Le Scienze" publishes the Italian translation of a "Scientific American" article which says that on December 13 Breakthrough Listen will use the Green Bank Radio telescope to monitor this object. But I wonder, what kind of radiations can it emit?
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Message 1906754 - Posted: 13 Dec 2017, 16:05:55 UTC
Last modified: 13 Dec 2017, 16:09:10 UTC

Dr. Andrew Siemion, head of the Berkeley SETI Research Center, and principal investigator for the Breakthrough Listen project writes that they will be looking mainly for narrow-band (artificial ) radio emissions. The Greenbank Telescope schedule mentions the frequency ranges of: ~ 1.5 through 2.6 and 3.85 through 10 GigaHertz.

They will monitor the object for 10 hours today, starting at 20 hours GMT. The Greenbank Telescope is reportedly sensitive enough to detect an omnidirectional signal of only one watt of power (about the same as a cell phone) at the current distance of Oumuamua.
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Message 1906854 - Posted: 13 Dec 2017, 21:44:29 UTC
Last modified: 13 Dec 2017, 21:44:53 UTC

Coverage on the BBC web site: Interstellar asteroid checked for alien technology

http://www.bbc.co.uk/news/science-environment-42329244

Wonder if we will see those observations appear in the SETI@home work units?
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Message 1907928 - Posted: 18 Dec 2017, 22:06:32 UTC

The first known interstellar asteroid may hold water from another star system in its interior, according to a study.

From the BBC web site: http://www.bbc.co.uk/news/science-environment-42397398
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Message boards : Science (non-SETI) : A Comet from the Stars?


 
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